/Engine/Source/Editor/UnrealEd/Public/Layers/LayersSubsystem.h
Attempts to get theULayerObject of the provided layer name.
If true a validULayerObject was found and set to OutLayer; if false, a validULayerobject was not found and invalid set to OutLayer
virtual bool TryGetLayer ( const [FName](API\Runtime\Core\UObject\FName) & LayerName, [ULayer](API\Runtime\Engine\Layers\ULayer) *& OutLayer )